19648090 has 128 divisors (see below), whose sum is σ = 49766400. Its totient is φ = 5391360.

The previous prime is 19648087. The next prime is 19648099. The reversal of 19648090 is 9084691.

It is not an unprimeable number, because it can be changed into a prime (19648099) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 248671 + ... + 248749.

It is an arithmetic number, because the mean of its divisors is an integer number (388800).

Almost surely, 2^19648090 is an apocalyptic number.

19648090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19648090 is an abundant number, since it is smaller than the sum of its proper divisors (30118310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19648090 is a wasteful number, since it uses less digits than its factorization.

19648090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 19648090 is about 4432.6166087312. The cubic root of 19648090 is about 269.8402804788.

The spelling of 19648090 in words is "nineteen million, six hundred forty-eight thousand, ninety".